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author | David Woodhouse <dwmw2@shinybook.infradead.org> | 2005-07-13 15:25:59 +0100 |
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committer | David Woodhouse <dwmw2@shinybook.infradead.org> | 2005-07-13 15:25:59 +0100 |
commit | 30beab1491f0b96b2f23d3fb68af01fd921a16d8 (patch) | |
tree | c580bdc0846269fbb10feeda901ecec1a48ee2ef /fs/inode.c | |
parent | 21af6c4f2aa5f63138871b4ddd77d7ebf2588c9d (diff) | |
parent | c32511e2718618f0b53479eb36e07439aa363a74 (diff) | |
download | linux-3.10-30beab1491f0b96b2f23d3fb68af01fd921a16d8.tar.gz linux-3.10-30beab1491f0b96b2f23d3fb68af01fd921a16d8.tar.bz2 linux-3.10-30beab1491f0b96b2f23d3fb68af01fd921a16d8.zip |
Merge with /shiny/git/linux-2.6/.git
Diffstat (limited to 'fs/inode.c')
-rw-r--r-- | fs/inode.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/fs/inode.c b/fs/inode.c index 1f9a3a2b89b..96364fae084 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -21,6 +21,7 @@ #include <linux/pagemap.h> #include <linux/cdev.h> #include <linux/bootmem.h> +#include <linux/inotify.h> /* * This is needed for the following functions: @@ -202,6 +203,10 @@ void inode_init_once(struct inode *inode) INIT_LIST_HEAD(&inode->i_data.i_mmap_nonlinear); spin_lock_init(&inode->i_lock); i_size_ordered_init(inode); +#ifdef CONFIG_INOTIFY + INIT_LIST_HEAD(&inode->inotify_watches); + sema_init(&inode->inotify_sem, 1); +#endif } EXPORT_SYMBOL(inode_init_once); @@ -282,6 +287,13 @@ static void dispose_list(struct list_head *head) if (inode->i_data.nrpages) truncate_inode_pages(&inode->i_data, 0); clear_inode(inode); + + spin_lock(&inode_lock); + hlist_del_init(&inode->i_hash); + list_del_init(&inode->i_sb_list); + spin_unlock(&inode_lock); + + wake_up_inode(inode); destroy_inode(inode); nr_disposed++; } @@ -317,8 +329,6 @@ static int invalidate_list(struct list_head *head, struct list_head *dispose) inode = list_entry(tmp, struct inode, i_sb_list); invalidate_inode_buffers(inode); if (!atomic_read(&inode->i_count)) { - hlist_del_init(&inode->i_hash); - list_del(&inode->i_sb_list); list_move(&inode->i_list, dispose); inode->i_state |= I_FREEING; count++; @@ -346,6 +356,7 @@ int invalidate_inodes(struct super_block * sb) down(&iprune_sem); spin_lock(&inode_lock); + inotify_unmount_inodes(&sb->s_inodes); busy = invalidate_list(&sb->s_inodes, &throw_away); spin_unlock(&inode_lock); @@ -439,8 +450,6 @@ static void prune_icache(int nr_to_scan) if (!can_unuse(inode)) continue; } - hlist_del_init(&inode->i_hash); - list_del_init(&inode->i_sb_list); list_move(&inode->i_list, &freeable); inode->i_state |= I_FREEING; nr_pruned++; @@ -1052,7 +1061,7 @@ static void generic_forget_inode(struct inode *inode) * inode when the usage count drops to zero, and * i_nlink is zero. */ -static void generic_drop_inode(struct inode *inode) +void generic_drop_inode(struct inode *inode) { if (!inode->i_nlink) generic_delete_inode(inode); @@ -1060,6 +1069,8 @@ static void generic_drop_inode(struct inode *inode) generic_forget_inode(inode); } +EXPORT_SYMBOL_GPL(generic_drop_inode); + /* * Called when we're dropping the last reference * to an inode. @@ -1242,29 +1253,21 @@ int inode_wait(void *word) } /* - * If we try to find an inode in the inode hash while it is being deleted, we - * have to wait until the filesystem completes its deletion before reporting - * that it isn't found. This is because iget will immediately call - * ->read_inode, and we want to be sure that evidence of the deletion is found - * by ->read_inode. + * If we try to find an inode in the inode hash while it is being + * deleted, we have to wait until the filesystem completes its + * deletion before reporting that it isn't found. This function waits + * until the deletion _might_ have completed. Callers are responsible + * to recheck inode state. + * + * It doesn't matter if I_LOCK is not set initially, a call to + * wake_up_inode() after removing from the hash list will DTRT. + * * This is called with inode_lock held. */ static void __wait_on_freeing_inode(struct inode *inode) { wait_queue_head_t *wq; DEFINE_WAIT_BIT(wait, &inode->i_state, __I_LOCK); - - /* - * I_FREEING and I_CLEAR are cleared in process context under - * inode_lock, so we have to give the tasks who would clear them - * a chance to run and acquire inode_lock. - */ - if (!(inode->i_state & I_LOCK)) { - spin_unlock(&inode_lock); - yield(); - spin_lock(&inode_lock); - return; - } wq = bit_waitqueue(&inode->i_state, __I_LOCK); prepare_to_wait(wq, &wait.wait, TASK_UNINTERRUPTIBLE); spin_unlock(&inode_lock); |